What computer is best for gaming?

[Me]

The title says it all. I'm looking for a computer that I can play computer games (MMO's etc) on. And that is also really good for modding MUA, for creating models, mannequins, etc. My old computer wouldn't let me do any of that.

[MUALover]

Any brand that features :
- Intel Core i5 / Core i7
- Nvidia GForce GeForce GTX 680  Video Card / AMD Radeon HD 7970 Video Card
- Has 4 GB RAM, higher is better

It will be expensive of course